Clarke, Alan, 1951- Evaluation research : an introduction to principles, methods, and practice / Alan Clarke with Ruth Dawson. - London ; Thousand Oaks, Calif. : SAGE, 1999. - viii, 216 p. ; 24 cm. Includes bibliographical references and index. ISBN: 076195094X 0761950958 (pbk.) LCCN: 00269181 Subjects--Topical Terms: Evaluation research (Social action programs) LC Class. No.: H62 / .C527 1999 Dewey Class. No.: 300.72 / CLE 1999